Hello Minimaus1204,
welcome to the forum and to the platform.
Here I have an info text that answers frequently asked questions about uploading.
https://www.crazypatterns.net/de/anleitungen-hochladen
Please read it all the way through. The text is pretty long, but it contains important points.
I have an article here about zipping with a Chromebook:
http://www.chromeosbooks.de/2014/04/chrome-os-tipp-ordner-und-dateien-zippen.html
If that doesn't work, please try this method:
www.
7-
zip.de/
You can use it to zip files.
Once you have downloaded and installed it, you can use it like this:
Put the files you want to zip into their own folder, select them all, right-click them, and a context menu will open. There you click on "7-Zip" and then on "Add to Archive".
You definitely need this—see the graphic; it gets larger when you click on it. But it's also mentioned again in the article.
The approval of the pattern should then go pretty quickly.
If you have any more questions, please put them here in the thread.
I wish you lots of success with your pattern and selling on CP.
Greetings from Mod Josefa